Center head scribe



- June 2, 1959 RLJILYICHER 2,888,749

.CENTER HEAD SCRIBE Filed Jfily 24. 1957 I 2 Sheeis-Sheet 1 INVENTOR AWL xmm ATTORNEY 5' June 2, 1959 R. J. LICHER I 49 CENTER HEAD SCRIBE Filed July 24, 1957 2 Sheets-Sheet 2 4 ATTORNEY 5' fl d States Pater CENTER HEAD SCRIBE Robert J. Licher, Albany, Wis.

Application July 24, 1957, Serial No. 673,962

1 Claim. (CI. 33-41) The present invention relates to center head scribes, and more particularly to scribes for marking lines parallel to and/ or concentric with adjacent surfaces.

The primary object of the invention is to provide a device for scribing lines adjacent to a surface concentric with or parallel to the surface. Another object of the invention is to provide a center head scribed of the class described above in which the scribe is provided with means for engaging a depending edge, and means for engaging an upstanding edge.

A further object of the invention is to provide a center head scribe of the class described above having a fully adjustable scribing point.

A still further object of the invention is to provide a center head scribe of the class described above having means associated therewith for replacing the scribing point with a pencil point.

Another object of the invention is to provide a center head scribe of the class described above which is inexpensive to manufacture, simple to use, and which is completely accurate in its operation.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:

Figure 1 is a front elevation of the invention, shown partly broken away and in section for convenience of illustration.

Figure 2 is a side elevation of the invention.

Figure 3 is an exploded fragmentary perspective view of the connecting joint.

Figure 4 is a fragmentary transverse cross-section taken along the line 44 of Figure 1, looking in the direction of the arrows.

Figure 5 is a fragmentary perspective view of the pencil holding attachment.

Figure 6 is a top plan view of the invention illustrated in Figures 1 through 5.

Figure 7 is a fragmentary transverse cross-section taken along the line 7-7 of Figure 8 looking in the direction of the arrows.

Figure 8 is a perspective view of a modified form of the invention.

Figure 9 is a vertical cross-section taken along the line 9-9 of Figure 10, looking in the direction of the arrows and illustrating the second modification of the invention.

Figure 10 is a top plan view of the structure illustrated in Figure 9.

Figure 11 is a side elevation of the structure illustrated in Figure 9.

Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference numeral 20 indicates generally a center head scribe constructed in accordance with the preferred form of the invention as illustrated in Figures 1 through 6.

The center head scribe 20 comprises a pair of legs, indicated generally at 21 and 22, having parallel upper portions 23, 24 diverging portions 25, 26 integrally formed therewith and extending downwardly therefrom, terminating in parallel feet portions 27 and 28, respectively. The parallel portions 23, 24 are each provided with a transverse slot 29, 30, respectively, adjacent the upper ends thereof and arranged in aligned relation.

A body 31 is positioned between the parallel portions 23, 24 of the legs 21, 22, and is provided with a bore 32 of circular form adjacent the upper end thereof. A circular disk 33 is arranged within the bore 32 so that the body 31 may pivot thereabout.

The disk 33 has a pair of flat tongues 34, 35 extending oppositely from the side faces thereof. The tongues 34, 35 have their side edges threaded as at 36, for reasons to be assigned. The slots 29, 30 engage over the tongues 34, 35, respectively, and a pair of washers 37, 38 each having a slot 39, 40 are positioned in engagement with the parallel portions 23, 24 of the legs 21, 22.

A nut 41 is threaded onto the threads 36 of the tongue 34 binding against the washer 37 and locking the leg 21 against pivotal movement relative to the body 31. A thumb nut 42 is engaged over the threads 36 on the tongue 35 pressing the washer 38 against the leg 22 and opposing the force of the nut 41 in locking the legs 21, 22 to the body 31.

The body 31 is elongated and has an open slot 43 formed adjacent the lower end thereof to receive a scribe member 44. The scribe member 44 is slotted at 45 and has a thumb screw 46 extending through the slot 45 threaded into the body 31 adjacent the lower end thereof. The thumb screw 46 secures the scriber 44 to the body 31 for vertical adjustment thereon. The lower end of the scriber 44 is pointed at 47 for scratching the surface to be marked.

The feet 27, 28 are provided with flattened surfaces 48 and 49, respectively, for engagement with an upstanding wall 50, as viewed in Figure 2. Notches 51, 52 are formed in the sides of the feet 27, 28, respectively, carrying the surfaces 48, 49 for engaging a relatively low upright surface. Notches 53 are formed in the rear of the feet 27, 28 for engaging over the upper edge of a bore.

In the use and operation of the invention, as illustrated in Figures 1 through 6, the legs 21, 22 are locked to the tongues 34, 35 and move together pivoting about the body 31. The scriber 44 is vertically adjusted by use of the thumb screw 46 to accommodate for various settings of the instrument.

In Figure 5 a pencil holding attachment 54 is illustrated wherein a relatively flat plate 55 is slotted at 56 so as to be received in the slot 43 of the body 31 and so that the thumb screw 46 can extend through the slot 56 to secure it therein. The lower end of the fiat plate 55 is provided with a socket portion 57 integrally formed therewith to receive a pencil 58 therein. A thumb screw 59 is threaded through the socket portion 57 to clamp the pencil 58 in the socket 57.

Referring now to the modification illustrated in Figures 7 and 8, a center head scriber 20a is provided with a pair of legs 21a, 22a integrally joined at their upper ends to a body 31a and diverging downwardly and outwardly to terminate in feet 27a and 2811, respectively. A link 60 is pivotally connected to the upper end of the body 31a by pivot bolt 33a secured by nut 41a. A washer 37a is positioned between the nut 41a and the body 31a, and a second washer 38a is positioned between the bolts 33:: and the link 60.

A scriber 44a is pivotally connected to the link 60 by a bolt 46a to permit the scriber 44a to be adjusted with respect to the legs 21a, 22a. The feet 27a and 28a of the center head scriber 20a are identical to the feet 27 28, and operate in the same manner. The modification illustrated in Figures 7 and 8 is operated in the same manner as the preferred form of the invention, differing only in adjustment not in purpose or function.

In Figures 9 through 11, a second modification of the preferred form of the invention is illustrated wherein a center head'scribe 20b is provided with a pair of spaced apart leg-s 21b, 22b, respectively, terminating in feet 27b, 2822, respectively, identical to the feet 27, 28 of the preferred form of the invention.

A horizontally extending body 31b is integrally connected to the upper ends of the legs 21b, 22b and extends perpendicularly thereto. A bar 60b is secured to the underside of the body 31b by thumb screw 33b extending downwardly therethrough,

A block 61 is horizontallyslidable on the bar 6012 and has a thumb screw 46!: threaded therein to clamp against the bar 60b, locking the block 61 in horizontally adjusted position thereon. A scliber 44b is mounted in the block 61 extending perpendicularly to the bar 601). The scriber 44b isfrictionally secured in the block 61 and can be adjusted vertically as desired.

The use and operation of the modification of the invention illustrated in Figures 9 through 11 is identical to that for the preferred form of the invention, differing only in adjustment rather than purpose or function.

Having thus described the preferred embodiments of the invention, it should be understood that numerous structural modifications and adaptations, in addition to those illustrated herein, may be resorted to without'departing from the scope of the appended claim.

What is claimed is:

A center head scriber comprising a pair of legs having upper spaced parallel portions and lower downwardly diverging portions, 21 foot formed on the lower end of each of said legs, each of said feet having a plurality of perpendicularly related work engaging surfaces, a body positioned between the parallel portions of said legs, an elongated fiat tongue engaged through flat slots formed in said legs, a disk integrally formed centrally of said tongue engaged in a bore formed in said body, said fiat tongue rigidly securing the upper end portions of said legs in spaced relation, with said disk rotatably supporting said body therebetween, and a scribe adjustably mounted on said body.

References Cited in the file of this patent UNITED STATES PATENTS 915,219 Regelson Mar. 16, 1909 1,112,264 Clark Sept. 29, 1914 1,427,493 Murray Aug. 29, 1922 1,697,493 Curran Jan. 1, 1929 

